DIY progress report - Page 23 - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 22nd May 2003, 06:42 PM   #221
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
Just keep your shirt on.

  Reply With Quote
Old 22nd May 2003, 07:17 PM   #222
diyAudio Retiree
 
Join Date: Oct 2002
Location: Spain or the pueblo of Los Angeles
Red face some gratitude please

Mr. Pass has written an excellent document with schematics and filter response curves called PASS LABORATORIES XVR1 ELECTRONIC CROSSOVER NETWORK OWNERS MANUAL. It is almost a paint by numbers kit for an active crossover design.

http://www.passlabs.com/pdf/XVR1MAN1.PDF

This is practically a textbook on active crossover design. He has also written about building simple discreet transistor op amps:

http://www.passdiy.com/pdf/diyopamp.pdf

A couple of afternoons with these a few Spice model to dial in the component values and you can design your own version of his circuit with very little effort. Thanks Nelson! Some of us are grateful as hell for you post here all the wonderful articles you have written. I am sure that they were a labor of love, but still a lot of labor that I doubt anyone loves in the middle of writing them.

I am waiting for someone to ask him to balance their check book and do their taxes next...........

The Grateful Fred
  Reply With Quote
Old 22nd May 2003, 09:04 PM   #223
Variac is offline Variac  United States
diyAudio Editor
 
Variac's Avatar
 
Join Date: Dec 2001
Location: San Francisco, USA
As in the Westerns:
"Hey Paw, we was just hav'n a little fun"

Just trying to keep Mr. Pass from having to read our true opinion:
My opinion on Pass Labs and Mr. Pass (Nelson) himself
over and over- the adulation must get a little boring:

The fun is the absolute unreasonableness of demanding his projects. Like kids demanding gifts! I think he realizes this, and I assume he sees we are making tongue in cheek comments, he IS a pretty smart guy don't you know.... I certainly hope we aren't really adding to the pressures of running his business up there in the idylic California foothills.

Now the taxes..... he only lives about 2 hours from me, and I could drive up there... I'm sure he wouldn't mind....hmmmm good idea-thanks Fred. Hey, "The Grateful Fred" have you considered starting a band?
  Reply With Quote
Old 22nd May 2003, 09:53 PM   #224
diyAudio Member
 
nobody special's Avatar
 
Join Date: Oct 2002
Location: USA
Default Sorry, but that name has been taken!

The original Grateful Fred:

<IMG SRC="http://members.aol.com/Gratefred/fred.jpg">
And his website:

http://members.aol.com/Gratefred/Music.htm


And yes, I have been checking passdiy hourly since I heard there was a new project coming out. I need my pass fix! A hit of el-pipo didn't do anything but give me the munchies.
__________________
Steve
  Reply With Quote
Old 23rd May 2003, 10:21 AM   #225
diyAudio Member
 
macka's Avatar
 
Join Date: Dec 2001
Location: Australia
Fred,

I'm surprised with your talents you haven't wipped up a pre amble of the diyaudio active crossover using Jfets for us diy mortals to follow in your foot steps............ only joking.

I am actually waiting quietly the new remote Passdiy active preamp , I have enquired and our darling Pass Diva Karen advises Mr Pass is busy writing the script among all his other noble responsibilities.

It will be nice to have so I can curl up on the sofa with chicky bab all nice and snug in the middle of winter with no interuptions... Muhhhahah. Shared bodily warmth is a wonderful thing said James Bond.

On the diy front has anyone ventured into the domain of a Jfet based X Preamp, I recall Grey had something in the pipeline.

This would be a handy project for a low noise based active speaker using hi sensitivity drivers (not horns of course says Mr Pass).

Ian
  Reply With Quote
Old 23rd May 2003, 11:01 AM   #226
diyAudio Retiree
 
Join Date: Oct 2002
Location: Spain or the pueblo of Los Angeles
Default Nelson is going to put a contract on me at this rate.

'Now the taxes..... he only lives about 2 hours from me, and I could drive up there... I'm sure he wouldn't mind....hmmmm good idea-thanks Fred. Hey, "The Grateful Fred" have you considered starting a band?"

Don't forget a couple of loads of laundry for a spin in the X Amp powered washer and dryer (uses hot air from the exit duct for heatsink cooling fans)


Actually I did build a Zetex mosfet follower Sallen Key active crossover with a 4th order L-R alignment. I will look for pics. I would post a schematic, but like the show biz advice about kids or animal acts, Never follow a Passlabs design!

An X type preamp schematic was posted on the forum and is below (not mine)
Attached Images
File Type: jpg xpre.jpg (29.3 KB, 2243 views)
  Reply With Quote
Old 23rd May 2003, 07:25 PM   #227
MikeW is offline MikeW  United States
diyAudio Member
 
MikeW's Avatar
 
Join Date: Sep 2002
Location: North of Boston
Is there someone signed in as Fred?
__________________
MikeW
  Reply With Quote
Old 23rd May 2003, 10:19 PM   #228
diyAudio Member
 
macka's Avatar
 
Join Date: Dec 2001
Location: Australia
Variac


"He only lives about 2 hours from me, and I could drive up there..."

Why don't you get an invitation, and don't forget to take a giant mud cake for Karen.

Ian
  Reply With Quote
Old 24th May 2003, 07:45 AM   #229
diyAudio Member
 
macka's Avatar
 
Join Date: Dec 2001
Location: Australia
Variac,

No, mud cake is sort of a super chocolate cake, but you could try Peanut Butter and Chocolate, thats Mr Pass favourite....flavour

XA Series: Like Peanut Butter and Chocolate.

Just ask your Momma for her secret recipe.

That would get munched up a 2 seconds flat.

Hey don't be surprised if Karen sends you a secret invite tonight.

Ian
  Reply With Quote
Old 25th May 2003, 09:50 AM   #230
diyAudio Moderator
 
pinkmouse's Avatar
 
Join Date: Apr 2002
Location: Chatham, England
The X Pre stuff is now in it's own thread here
__________________
Rick: Oh Cliff / Sometimes it must be difficult not to feel as if / You really are a cliff / when fascists keep trying to push you over it! / Are they the lemmings / Or are you, Cliff? / Or are you Cliff?
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



New To Site? Need Help?

All times are GMT. The time now is 11:19 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2